Home / 7,912.20-11,868.48-2,069.40

Finding the Fourth Proportional to 7,912.20, 11,868.48 and 2,069.40

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Solution

The fourth proportional to 7,912.20, 11,868.48 and 2,069.40 is: 3,104.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,912.20 : 11,868.48 = 2,069.40 : x
  2. Step 2: Convert to fraction form
    7,912.20/11,868.48 = 2,069.40/x
  3. Step 3: Cross multiply
    7,912.20x = 11,868.48 × 2,069.40
  4. Step 4: Simplify right side
    7,912.20x = 24,560,632.51
  5. Step 5: Solve for x
    x = 24,560,632.51/7,912.20
  6. Step 6: Final answer
    x = 3,104.15

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.